|Número de publicación||US5300764 A|
|Tipo de publicación||Concesión|
|Número de solicitud||US 07/826,337|
|Fecha de publicación||5 Abr 1994|
|Fecha de presentación||27 Ene 1992|
|Fecha de prioridad||11 Sep 1991|
|También publicado como||DE69227873D1, DE69227873T2, EP0531605A1, EP0531605B1|
|Número de publicación||07826337, 826337, US 5300764 A, US 5300764A, US-A-5300764, US5300764 A, US5300764A|
|Inventores||Hidekazu Hoshino, Itsuo Takeuchi|
|Cesionario original||Nhk Spring Company, Ltd.|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (7), Citada por (117), Clasificaciones (17), Eventos legales (4)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
The present invention relates to an optical identification label which is transparent to human eyes but has a specific optical property which can be identified with optical means.
Conventionally is known the structure in which hologram which is difficult to duplicate is affixed as an identification label to objects such as magnetic cards and other information storage cards, stocks and bonds, tickets, and other commercial goods to identify their authenticity, and such a label is disclosed, for instance, in Japanese utility model laid-open publication (kokai) No. 61-182580.
However, such an identification label is necessarily affixed to a location which can be readily and visually identified because it is required to be visually identified. Therefore, the freedom of the design of the object tends to be reduced because the position, shape and color of the identification label must be considered as a part of the design, and the external appearance of the object may be seriously impaired because of the failure to achieve an acceptable design balance.
According to the disclosure of Japanese patent laid-open publication (kokai) No. 3-71383 by the applicant of this patent application, a hologram area having a unique diffraction property is provided on the surface of an object, and this hologram area is identified with an identification unit serving as optical identification means. By using this structure, since the object consists of an object having a fixed shape, such as information storage cards, stocks and bonds, and tickets, and the identification process is carried out by the identification unit, it is possible to place an identification label at an inconspicuous location on the object and to improve the freedom in the design of the object, but the very existence of the identification label on the surface of the object could not totally eliminate the restriction on the design of the object.
Meanwhile, as for the system in which the identification process is carried out with a machine, since the operator is not required to heed the location at which the identification label is placed, it is preferable to make the visual recognition of the existence of the identification label difficult as much as possible to the end of discouraging any attempt to duplicate the identification label with an fraudulent intent.
In view of such problems of the prior art, a primary object of the present invention is to provide an optical identification label which would not affect the external appearance of the object to which the label is affixed.
A second object of the present invention is to provide an optical identification label which is difficult to fabricate for potential forgers.
A third object of the present invention is to provide an optical identification label which ensures accurate and reliable identification.
These and other objects of the present invention can be accomplished by providing a transparent optical identification label, comprising a reflective layer which transmits visible light but reflects light of a certain wavelength other than visible light with a specific directivity that can be identified with optical identifying means. Such a reflective directivity may be produced by using hologram or diffraction grating.
Also, such an wavelength selectivity may be produced in the reflective layer by alternately laminating layers of two or more kinds of different materials having different refractive indices to form the reflective layer.
The identification label of the present invention may be conveniently used as means for preventing an unauthorized duplication of an object to which the identification label is affixed. Further, data may be encoded in the geometrical pattern of the reflected light so that the identification label may be used as an information carrier.
According to such a structure, since visible light is not reflected by the light reflecting layer or, in other words, the light reflecting layer is transparent to human eyes, the identification label would not affect the design of the object in any way. Since the position of the identification label cannot be easily visually determined, forgery of the identification label is rendered highly difficult.
Now the present invention is described in the following with reference to the appended drawings, in which:
FIG. 1 is a perspective view of a card, and an essential part of the structure for identifying the authenticity of the card;
FIG. 2 is a plan view of a light emitting device and a light receiving device;
FIG. 3 is an enlarged sectional view of the identification label; and
FIG. 4 is a graph showing the relationship between the wavelength of the illuminating light and the transmittance of the light reflecting layer.
FIGS. 1 through 4 show an embodiment of the present invention applied to a magnetic card given here as an example of information storage card. Referring to FIG. 1, a magnetic stripe 2 extends longitudinally on a surface 1a of the card 1. The surface 1a is also provided with an identification label 3 serving as a light reflecting part and having a hologram layer given with a specific reflective directivity as described hereinafter.
Meanwhile, a magnetic head 4 is provided in a reader/writer of the card 1 which opposes the magnetic stripe 2 when the card 1 is conveyed by a conveyer unit not shown in the drawings. Also provided is a light emitting/receiving unit 5 so as to oppose the identification label 3 when the card 1 is conveyed. This light emitting/receiving unit 5 consists of a light emitting device 6 for projecting an illuminating laser light beam upon the identification label 3 on the surface 1a of the card 1, and an annular light receiving device 8 surrounding the light emitting device 6 as illustrated in FIG. 2. The light emitting device 6 directly opposes the identification label 3 when the card 1 is at a certain prescribed position. The light receiving device 8 consists of a multi-section photodiode which is divided into eight sectors 8a through 8h which can individually detect light. This light receiving device 8 is connected to a determination unit 9 which consists of known CPU, memory, I/F and other components for determining the authenticity of the card 1.
As best illustrated in FIG. 3, the identification label 3 comprises a hologram layer 10 consisting of a hologram forming layer 10a and a light reflecting layer 10b disposed under the hologram forming layer 10a, a bonding agent layer 11 for integrally retaining the hologram layer 10 and securely attaching it to the surface la of the card 1, and a protective layer 12 covering the outer surface of the hologram layer 10.
Here, it should be noted that the hologram forming layer 10a is a transparent layer. As shown in Table 1, the light reflecting layer 10b is formed by alternately laminating layers of sodium hexafluoro-aluminate (Na3 AlF6) having a relatively small index of refraction and layers of zinc sulphate (ZnS) having a relatively large index of refraction, and, as shown in FIG. 4, has a transmittance of approximately 100% in the range of visible light (380 nm to 700 nm in wavelength) and a transmittance of approximately 0% in the range of infrared light (780 nm or longer in wavelength).
TABLE 1______________________________________Layer Number material thickness (nm)______________________________________1 Na3 AlF6 802 ZnS 923 Na3 AlF6 1564 ZnS 875 Na3 AlF6 1496 ZnS 847 Na3 AlF6 1438 ZnS 809 Na3 AlF6 14010 ZnS 8011 Na3 AlF6 14312 ZnS 8413 Na3 AlF6 14914 ZnS 8715 Na3 AlF6 15616 ZnS 9217 Na3 AlF6 80______________________________________
Therefore, this hologram layer 10 is substantially invisible to human eyes, but has such a reflective directivity as to diffract and reflect infrared light projected from a direction opposing the identification label onto a diagonally opposed pair of the sectors 8a through 8h surrounding the light emitting device 6 as illustrated in FIG. 2.
When actually identifying the authenticity of the card 1, the card 1 is conveyed to a position where the light emitting device 6 of the light emitting/receiving unit 5 directly opposes the identification label 3. Then, the illuminating light consisting of infrared light is projected upon the identification label 3. The light diffracted and reflected by the identification label 3 is received by some of the sectors 8a through 8h of the light receiving device 8, and the authenticity of the card 1 is determined according to the pattern of the received light. Therefore, even when a forger obtained this card 1 with a fraudulent intent, since the identification label 3 is not visible to the human eyes and is therefore hard to locate, it would be substantially impossible to forge the card, combined with the difficulty in analyzing the reflective directivity of the hologram and the technical difficulties and the prohibitive cost involved in duplicating the hologram.
Obviously, the present invention is not limited to the above embodiment. For instance, the hologram was designed so that the illuminating light may be diffracted and reflected onto a pair selected from the sectors 8a through 8h of the light receiving device 8, but the hologram may also be designed so that the illuminating light may be diffracted and reflected onto four or more of the sectors 8a through 8h. If desired, it is possible to encode specific data or information in the pattern of the diffracted or reflected light, and to use the identification label as a medium for carrying specific information.
Also, in the above embodiment, the identification label 3 was provided on a magnetic card 1 given as an example of information storage card, but it may be provided on valuable papers such as checks, promissory notes and gift certificates, and commercially sold goods in general. In this case, by covering the card 1 with a mask having an opening at a position corresponding to the location of the identification label 3, it is possible to identify the identification label 3 by using a portable hand scanner or the like.
Although the hologram was used in the above embodiment, similar results can be obtained by using diffraction grating on the identification label 3 which is to be affixed onto the card 1.
As described above, according to the optical identification label for identifying an object of the present invention, since the object carries a light reflecting part including a light reflecting layer which transmits visible light but reflects light other than visible light of a prescribed range of wavelength and is provided with a unique reflective directivity that can be identified with optical identification means, and the visible light is therefore not reflected by the reflective layer or, in other words, the reflective layer is made transparent, the identification label would not affect the design of the object, and the freedom in designing the object is increased. Further, since the location of the identification label cannot be easily determined with human eyes, the forgery of the object is made extremely difficult. Thus, the present invention offers a significant advantage.
Although the present invention has been described in terms of a preferred embodiment thereof, it is obvious to a person skilled in the art that various alterations and modifications are possible without departing from the scope of the present invention which is set forth in the appended claims.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3536894 *||23 Jul 1965||27 Oct 1970||Jerry E Travioli||Electronic credit card acceptor|
|US4034211 *||20 Jun 1975||5 Jul 1977||Ncr Corporation||System and method for providing a security check on a credit card|
|US4501439 *||28 Sep 1982||26 Feb 1985||Lgz Landis & Gyr Zug Ag||Document having a security feature and method of determining the authenticity of the document|
|US4856857 *||26 Sep 1988||15 Ago 1989||Dai Nippon Insatsu Kabushiki Kaisha||Transparent reflection-type|
|JP1371383A *||Título no disponible|
|JPS644934A *||Título no disponible|
|JPS61182580A *||Título no disponible|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US5401561 *||8 Sep 1993||28 Mar 1995||Borus Spezialverfahren Und -Gerate Im Sondermaschinenbau Gmbh||Basic commodity or collector's object with identification label|
|US5497227 *||16 Ago 1993||5 Mar 1996||Nhk Spring Co., Ltd.||System for determining the authenticity of an object|
|US5621515 *||29 Dic 1994||15 Abr 1997||Nhk Spring Co., Ltd.||Identification system using regions of predetermined properties interspersed among regions of other properties|
|US5644412 *||4 Feb 1994||1 Jul 1997||Dai Nippon Printing Co., Ltd.||Hologram and method of reading the same|
|US5661703 *||21 Mar 1996||26 Ago 1997||Fujitsu Limited||Optical recording medium having a non-volatile identification code and method for encoding data using same|
|US5735550 *||31 May 1996||7 Abr 1998||Hinkle; Michael B.||Secure credit card|
|US5812501 *||13 Mar 1997||22 Sep 1998||Fujitsu Limited||Optical recording medium having a non-volatile identification code and method for encoding data using same|
|US5825475 *||29 Jul 1997||20 Oct 1998||Van Leer Metallized Products (Usa) Limited||System and method for determining which of a plurality of visually indistinguishable objects have been marked with a covert indicator|
|US6092728 *||12 Jul 1999||25 Jul 2000||Symbol Technologies, Inc.||Miniature laser diode focusing module using micro-optics|
|US6155491 *||2 Jun 1998||5 Dic 2000||Welch Allyn Data Collection, Inc.||Lottery game ticket processing apparatus|
|US6290130||13 Abr 2000||18 Sep 2001||Drexler Technology Corporation||Anti-counterfeit authentication method for optical memory cards and hybrid smart cards|
|US6290137||1 Oct 1999||18 Sep 2001||Perfect Plastic Printing Corporation||Transparent/translucent financial transaction card including an infrared light filter|
|US6296188||24 Nov 1999||2 Oct 2001||Perfect Plastic Printing Corporation||Transparent/translucent financial transaction card including an infrared light filter|
|US6304660||2 Jun 1998||16 Oct 2001||Welch Allyn Data Collection, Inc.||Apparatuses for processing security documents|
|US6405929||2 Jun 1998||18 Jun 2002||Hand Held Products, Inc.||Material detection systems for security documents|
|US6459514 *||18 Oct 1999||1 Oct 2002||3M Innovative Properties Company||Multilayer polymer film with additional coatings or layers|
|US6581839||1 Sep 2000||24 Jun 2003||American Express Travel Related Services Company, Inc.||Transaction card|
|US6627250 *||9 Jun 2000||30 Sep 2003||Abb Patent Gmbh||Method of safeguarding electrical switchgear, in particular, against imitation|
|US6705530||10 Ene 2003||16 Mar 2004||Perfect Plastic Printing Corporation||Transparent/translucent financial transaction card|
|US6732936||29 Sep 2000||11 May 2004||Perfect Plastic Printing Corp.||Transparent/translucent financial transaction card|
|US6737154 *||16 Abr 2001||18 May 2004||3M Innovative Properties Company||Multilayer polymer film with additional coatings or layers|
|US6749123||31 Ene 2002||15 Jun 2004||American Express Travel Related Services Company, Inc.||Transaction card|
|US6764014||7 Mar 2002||20 Jul 2004||American Express Travel Related Services Company, Inc.||Transaction card|
|US6986465||15 Dic 2003||17 Ene 2006||American Express Travel Related Services Company, Inc.||Transparent/translucent financial transaction card|
|US7070112||10 Mar 2004||4 Jul 2006||American Express Travel Related Services Company, Inc.||Transparent transaction device|
|US7092160||12 Sep 2003||15 Ago 2006||Illumina, Inc.||Method of manufacturing of diffraction grating-based optical identification element|
|US7093767||10 Mar 2004||22 Ago 2006||American Express Travel Related Services Company, Inc.||System and method for manufacturing a punch-out RFID transaction device|
|US7106513||12 Sep 2003||12 Sep 2006||Illumina, Inc.||Diffraction grating-based encoded particle|
|US7126755||12 Sep 2003||24 Oct 2006||Moon John A||Method and apparatus for labeling using diffraction grating-based encoded optical identification elements|
|US7156301||3 Mar 2005||2 Ene 2007||American Express Travel Related Services Company, Inc.||Foldable non-traditionally-sized RF transaction card system and method|
|US7164533||22 Ene 2004||16 Ene 2007||Cyvera Corporation||Hybrid random bead/chip based microarray|
|US7190522||12 Sep 2003||13 Mar 2007||Cyvera Corporation||Chemical synthesis using diffraction grating-based encoded optical elements|
|US7271951||18 May 2005||18 Sep 2007||3M Innovative Properties Company||Cards and laminates incorporating multilayer optical films|
|US7349158||12 Sep 2003||25 Mar 2008||Cyvera Corporation||Diffraction grating-based encoded micro-particles for multiplexed experiments|
|US7375890||16 Jun 2006||20 May 2008||Cyvera Corporation||Method of manufacturing of a diffraction grating-based optical identification element|
|US7377443||21 Mar 2003||27 May 2008||American Express Travel Related Services Company, Inc.||Transaction card|
|US7399643||12 Sep 2003||15 Jul 2008||Cyvera Corporation||Method and apparatus for aligning microbeads in order to interrogate the same|
|US7433123||22 Feb 2005||7 Oct 2008||Illumina, Inc.||Optical identification element having non-waveguide photosensitive substrate with diffraction grating therein|
|US7441703||1 Oct 2004||28 Oct 2008||Illumina, Inc.||Optical reader for diffraction grating-based encoded optical identification elements|
|US7508608||17 Nov 2005||24 Mar 2009||Illumina, Inc.||Lithographically fabricated holographic optical identification element|
|US7602952||16 Nov 2005||13 Oct 2009||Illumina, Inc.||Scanner having spatial light modulator|
|US7604173||16 Nov 2005||20 Oct 2009||Illumina, Inc.||Holographically encoded elements for microarray and other tagging labeling applications, and method and apparatus for making and reading the same|
|US7607583||13 Oct 2007||27 Oct 2009||American Express Travel Related Services Company, Inc.||Clear contactless card|
|US7619819||21 Jul 2005||17 Nov 2009||Illumina, Inc.||Method and apparatus for drug product tracking using encoded optical identification elements|
|US7623624||16 Nov 2006||24 Nov 2009||Illumina, Inc.||Method and apparatus for labeling using optical identification elements characterized by X-ray diffraction|
|US7636193||2 May 2006||22 Dic 2009||3M Innovative Properties Company||Visible light-transmissive IR filter with distorted portions|
|US7659983||30 Nov 2006||9 Feb 2010||Electronics And Telecommunications Resarch Institute||Hybrid random bead/chip based microarray|
|US7668750||10 Mar 2004||23 Feb 2010||David S Bonalle||Securing RF transactions using a transactions counter|
|US7690577||20 Sep 2007||6 Abr 2010||Blayn W Beenau||Registering a biometric for radio frequency transactions|
|US7705732||9 Dic 2004||27 Abr 2010||Fred Bishop||Authenticating an RF transaction using a transaction counter|
|US7725427||28 Sep 2004||25 May 2010||Fred Bishop||Recurrent billing maintenance with radio frequency payment devices|
|US7791802||23 Jun 2008||7 Sep 2010||Illumina, Inc.||Optical identification element having a non-waveguide substrate|
|US7793845||3 Ago 2009||14 Sep 2010||American Express Travel Related Services Company, Inc.||Smartcard transaction system and method|
|US7796333||23 Sep 2008||14 Sep 2010||Illumina, Inc.||Encoded microparticles and a method for fabricating|
|US7827106||24 Dic 2003||2 Nov 2010||American Express Travel Related Services Company, Inc.||System and method for manufacturing a punch-out RFID transaction device|
|US7830575||10 Abr 2007||9 Nov 2010||Illumina, Inc.||Optical scanner with improved scan time|
|US7837116||23 Nov 2010||American Express Travel Related Services Company, Inc.||Transaction card|
|US7837118||3 Abr 2009||23 Nov 2010||American Express Travel Related Services Company, Inc.||Infrared blocking article|
|US7843567||22 Dic 2009||30 Nov 2010||Illumina, Inc.||Methods of identifying an analyte and nucleic acid analysis|
|US7872804||10 Oct 2006||18 Ene 2011||Illumina, Inc.||Encoded particle having a grating with variations in the refractive index|
|US7886157||25 Ene 2008||8 Feb 2011||Xatra Fund Mx, Llc||Hand geometry recognition biometrics on a fob|
|US7889052||10 Ene 2003||15 Feb 2011||Xatra Fund Mx, Llc||Authorizing payment subsequent to RF transactions|
|US7898735||21 Mar 2008||1 Mar 2011||Illumina, Inc.||Methods and systems for writing an optical code within or on a fiber substrate|
|US7900836||16 Jul 2008||8 Mar 2011||Illumina, Inc.||Optical reader system for substrates having an optically readable code|
|US7901630||13 Sep 2005||8 Mar 2011||Illumina, Inc.||Diffraction grating-based encoded microparticle assay stick|
|US7923260||6 Oct 2006||12 Abr 2011||Illumina, Inc.||Method of reading encoded particles|
|US8001054||4 Ene 2006||16 Ago 2011||American Express Travel Related Services Company, Inc.||System and method for generating an unpredictable number using a seeded algorithm|
|US8016191||9 Ago 2010||13 Sep 2011||American Express Travel Related Services Company, Inc.||Smartcard transaction system and method|
|US8049893||8 Nov 2010||1 Nov 2011||Illumina, Inc.||Methods of identifying analytes and using encoded particles|
|US8066190||21 May 2008||29 Nov 2011||American Express Travel Related Services Company, Inc.||Transaction card|
|US8081792||20 Dic 2011||Illumina, Inc.||Fourier scattering methods for encoding microbeads and methods and apparatus for reading the same|
|US8191788||19 Oct 2010||5 Jun 2012||American Express Travel Related Services Company, Inc.||Transaction card|
|US8266056||27 Sep 2010||11 Sep 2012||American Express Travel Related Services Company, Inc.||System and method for manufacturing a punch-out RFID transaction device|
|US8284025||20 Sep 2007||9 Oct 2012||Xatra Fund Mx, Llc||Method and system for auditory recognition biometrics on a FOB|
|US8333325||26 Ene 2011||18 Dic 2012||Illumina, Inc.||Optical reader system for substrates having an optically readable code|
|US8470605||20 Mar 2009||25 Jun 2013||Illumina, Inc.||Optical reader for reading encoded microparticles|
|US8498052||14 Sep 2009||30 Jul 2013||Illumina, Inc.||Composition including an item and an encoded optical substrate and a method for identifying an item|
|US8548927||26 Mar 2004||1 Oct 2013||Xatra Fund Mx, Llc||Biometric registration for facilitating an RF transaction|
|US8565475||23 Sep 2011||22 Oct 2013||Illumina, Inc.||Optical system and method for reading encoded microbeads|
|US8614852||7 Sep 2010||24 Dic 2013||Illumina, Inc.||Elongated microparticles having an optically detectable code configured to at least one of reflect or filter light|
|US8931704||11 May 2012||13 Ene 2015||Iii Holdings 1, Llc||Transaction card|
|US9024719||15 Oct 2004||5 May 2015||Xatra Fund Mx, Llc||RF transaction system and method for storing user personal data|
|US9031880||25 Oct 2006||12 May 2015||Iii Holdings 1, Llc||Systems and methods for non-traditional payment using biometric data|
|US20020145049 *||31 Ene 2002||10 Oct 2002||Ellen Lasch||Transaction card|
|US20030141373 *||22 Nov 2002||31 Jul 2003||Ellen Lasch||Transaction card with dual IC chips|
|US20040075907 *||20 Ago 2003||22 Abr 2004||John Moon||Diffraction grating-based encoded micro-particles for multiplexed experiments|
|US20040124245 *||15 Dic 2003||1 Jul 2004||Kiekhaefer John H.||Transparent/translucent financial transaction card|
|US20040125424 *||12 Sep 2003||1 Jul 2004||Moon John A.||Diffraction grating-based encoded micro-particles for multiplexed experiments|
|US20040126875 *||12 Sep 2003||1 Jul 2004||Putnam Martin A.||Assay stick|
|US20040130761 *||12 Sep 2003||8 Jul 2004||John Moon||Chemical synthesis using diffraction grating-based encoded optical elements|
|US20040132205 *||12 Sep 2003||8 Jul 2004||John Moon||Method and apparatus for aligning microbeads in order to interrogate the same|
|US20040179267 *||12 Sep 2003||16 Sep 2004||Moon John A.||Method and apparatus for labeling using diffraction grating-based encoded optical identification elements|
|US20040233485 *||12 Sep 2003||25 Nov 2004||Moon John A.||Diffraction grating-based optical identification element|
|US20040256469 *||10 Mar 2004||23 Dic 2004||American Express Travel Related Services Company, Inc.||A system and method for manufacturing a punch-out rfid transaction device|
|US20040263923 *||22 Ene 2004||30 Dic 2004||John Moon||Hybrid random bead/chip based microarray|
|US20050023359 *||24 Dic 2003||3 Feb 2005||Saunders Peter D.||System and method for manufacturing a punch-out RFID transaction device|
|US20050040242 *||10 Mar 2004||24 Feb 2005||American Express Travel Related Services Company, Inc.||A transparent transaction device|
|US20050051633 *||23 Jul 2004||10 Mar 2005||Ellen Lasch||Transaction card|
|US20050220408 *||22 Feb 2005||6 Oct 2005||Cyvera Corporation||Optical identification element having non-waveguide photosensitive substrate with diffraction grating therein|
|US20050227252 *||15 Nov 2004||13 Oct 2005||Moon John A||Diffraction grating-based encoded articles for multiplexed experiments|
|US20050259326 *||18 May 2005||24 Nov 2005||3M Innovative Properties Company||Cards and laminates incorporating multilayer optical films|
|US20060057729 *||18 Ago 2005||16 Mar 2006||Illumina, Inc.||Diffraction grating-based encoded element having a substance disposed thereon|
|US20060071075 *||1 Oct 2004||6 Abr 2006||Moon John A||Optical reader for diffraction grating-based encoded optical identification elements|
|US20060118630 *||16 Nov 2005||8 Jun 2006||Illumina, Inc.||Holographically encoded elements for microarray and other tagging labeling applications, and method and apparatus for making and reading the same|
|US20060132877 *||17 Nov 2005||22 Jun 2006||Illumina, Inc.||Lithographically fabricated holographic optical identification element|
|US20070121181 *||16 Nov 2006||31 May 2007||Cyvera Corporation||Method and apparatus for labeling using optical identification elements characterized by X-ray diffraction|
|US20070236796 *||16 Jun 2006||11 Oct 2007||Illumina, Inc.||Method of manufacturing of a diffraction grating-based optical identification element|
|US20070258133 *||2 May 2006||8 Nov 2007||3M Innovative Properties Company||Visible light-transmissive ir filter with distorted portions|
|US20080140580 *||12 Jun 2008||Beenau Blayn W||Hand geometry recognition biometrics on a fob|
|US20080197200 *||3 Abr 2008||21 Ago 2008||American Express Travel Related Services Company, Inc.||Transaction card|
|US20080251581 *||21 May 2008||16 Oct 2008||American Express Travel Related Services Company, Inc.||Transaction card|
|US20090242637 *||3 Abr 2009||1 Oct 2009||American Express Travel Related Services Company, Inc.||Infrared blocking article|
|US20100246005 *||30 Sep 2010||Cyvera Corporation||Encoded particle having a grating with variations in the refractive index|
|US20110003394 *||6 Ene 2011||Illumina, Inc.||Encoded microparticles|
|US20110058172 *||8 Nov 2010||10 Mar 2011||Illumina, Inc.||Methods of identifying analytes and using encoded particles|
|USRE43157||31 Ene 2008||7 Feb 2012||Xatra Fund Mx, Llc||System and method for reassociating an account number to another transaction account|
|USRE45416||15 Jun 2012||17 Mar 2015||Xatra Fund Mx, Llc||Processing an RF transaction using a routing number|
|Clasificación de EE.UU.||235/487, 283/86, 283/91, 235/468, 356/71, 235/457, 359/2|
|Clasificación internacional||G06K19/16, G09F7/00, B42D15/10, G06K19/06, G02B27/42, G03H1/18|
|Clasificación cooperativa||B42D25/328, G06K19/16|
|Clasificación europea||G06K19/16, B42D15/10D|
|27 Ene 1992||AS||Assignment|
Owner name: NHK SPRING CO., LTD.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HOSHINO, HIDEKAZU;TAKEUCHI, ITUSO;REEL/FRAME:005999/0472
Effective date: 19911225
|15 Sep 1997||FPAY||Fee payment|
Year of fee payment: 4
|21 Sep 2001||FPAY||Fee payment|
Year of fee payment: 8
|9 Sep 2005||FPAY||Fee payment|
Year of fee payment: 12